74ACT533SCX

Latches Overview

The onsemi 74ACT533SCX is an octal transparent latch with 3-STATE outputs, part of the ACT logic family. It integrates eight D-type latches in a single package to support bus-oriented system applications. The device operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible inputs. Key electrical characteristics include propagation delays from data input to output ranging from 2.0ns to 8.5ns depending on temperature, and output drive capabilities sourcing or sinking 24mA. The component is housed in a 20-Lead Small Outline Integrated Circuit (SOIC) package.

Latches Feature Summary

• Integrates eight transparent latches with 3-STATE outputs for efficient bus organization
• Features reduced ICC and IOZ values compared to standard equivalents
• Provides high-drive outputs capable of sourcing and sinking 24mA
• Maintains TTL-compatible input thresholds for broad interface compatibility

Latches Applications

• Bus organized system applications
• Buffering memory address registers
• Driving bus lines in digital systems

Latches Procurement Notes

Verify the specific suffix 'SCX' indicates the SOIC-20 surface mount package variant. Confirm RoHS compliance status through official manufacturer documentation as requirements may vary by production batch. Ensure the design accounts for the specified operating temperature range of -40°C to +85°C. Check for any lifecycle notices regarding obsolescence or last-time buy dates directly from the supplier.

Latches Selection Notes

Select this component when an octal latch with tri-state control is required for bus architectures. It serves as the inverted counterpart to the ACT373, offering complementary functionality for specific logic designs. Consider the 24mA drive strength for direct interfacing with loads without additional buffering. Verify that the 20-pin SOIC footprint aligns with the target PCB layout constraints.

Latches Part Context

This device belongs to the 74ACT series of advanced CMOS logic, designed for high-speed operation with low power consumption. The ACT family bridges the performance gap between standard TTL and older CMOS technologies. The 74ACT533 specifically addresses the need for multi-bit storage with controlled output impedance in complex digital circuits.

Latches Replacement Considerations

The datasheet identifies the 74ACT373 as the non-inverted version of this device. Designers requiring non-inverted logic should substitute accordingly. Other manufacturers producing equivalent 74ACT533 devices may offer pin-compatible alternatives, but verify electrical specifications and timing parameters against the original datasheet.